Tractor.



R. WHiPPLE.

THAcoRj APPLICATION FiLED APFLZB, 1919.

l realize that considerable variation is possible in the detail of c, msti'uction andY arrangement of parts without. departing 'troni the spirit ot my invention7 and l therefore do not intend to limit myseli'ito the speciiic form shown and described'.

l claim: j

l. In combination with a tractor provided with a( source ot power and control .means therefor, automatic' Steering mechanism am sociated therei'vith comprising a pilot device lconnected with the steering mechanism adapted to travel in a furrow and he held from turning b v contact with the wall thereof, meansy for holding Said pilot device against'a' furrow wall, connectionsf between the steering mechanieln and' the power control adapted. to be actuated whenfthe pilot device leaves the furrow, and manually operated means within reap-hof the. operator adapted to restore said parte to normal position.

Q.` ln combination with a tractor provided with a source et power and control means thereior, steering' mechanism comprising a, wheel-equipped post, a pilot device connected with vsaid post kand adapted to travel in a furrow and against the wall thereof, inc-am,l tendina` to normalljvv turn :said steer` ing mechaniinn and pilot device to a position at sulietantiaily right angles to thewtractorlframe, `connections between the `Steering- `mechanism and the power control adapted to he actuated by the steering mechanism vwhen the name turned by Ysaid turning means when the pilot device turns from contact with the furrow wall, and hand operated means within vreach of the operator `adapted to reset the pilot device after Such operation. i

3. ln combination with a tractor provided with a source ot power and control means ther-eier, eteeringl mechanism comprising a wheel-eouipped post, a pilot device connected with said post and adapted to travel 1n. a furrow and Lagainst the wall thereof, means tending to wnormally turn Said steering mechanism and'- pilot device to a ponition at substantially right angles to the tractor trame, connections betweenthe steering` mechanism and the power control adapted to be actuated by the steering` mechanismwhen the saine in turned by said turnin` vmennel when the pilotdevice turus'troin contact with the vfurrow wall, and hand control means within reach or' ythe operator adapted to holdl said steering means in any desired position when saidy tractor is traveling` over level ground.

.-l. ln combination witha tractor provided withxa source otpowe and control means therefor, automatic steering mechanism asto travel in a iurrow orithe like and to auand control means comprising a wheel' sociated i therewith comprising wheelequipped poet, a pilot device carried thereb)Y and adapted to travel in ai 'furrow and normalljtv held against the wall thereof, means adapted to stop said` Source olf' power when rsaid pilot device leaves the `furrow, and manuallT controlled means adapted to prevent the actuation of Said tiret mentioned means when desired.

5. ln combination with a tractor adapted to carry1 soil ene-aging' .iniplemente, a gas engine for driving said tractor, automatic steering and control means aesociated with Said tractor, and manually operated means i for controlling and rezsetting Said automatic steering and control means;

, 6. In combination with a tractor, adapted to carry Soil engagin implements, a gas engine for driving said tractor, automatic steering and control means associated with saidtractor, said automatic steering and control means comprising a member adapted tid tomaticall)7 follow said furrow, and manuall)` operated menne for controlling said member when travelingl over level ground and tor resetting the same in a furrow.

7. ln combination with a tractor adapted to' carry soil engaging implements, a gas engine for driving' said tractor and automatic steering and control means associated with said tractor, said automatic Steering adapted to follow the furrow or the. like whereby the tractor is guided thereby, means actuated by a turning ot said wheel beyond a predetermined angle 'for stopping the engine, and manually operated means for reir dering' inoperative said automatic means;

8. ln'eombination with a' tractor adapted to carry soil engaging; implements, a engine l`or driving said tractor and auto# matic steering` and controlv means associated with said tractor, said automatic Steering and control mennel comprising a. guide meniberadapted to travel in a furrow or the like and to automatically steer the tractor in n, direction parallel to said furrow, means for L urging l@aid guide member into engagement i with a eide wall; of lthe furrow, Ineens adapted to stop the gas engine when Suid guide' means leaves the. furrow, land manually operated lmeans to cause said lguide member and steeringwheel to travel inany desireddirection. l

ln testimony wli'ereot'latlix my signature in presence of two witnessed RALPH YVHPPSLE.

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Vlitnessee Cant CARLSON, A ,Bovine R. Boeren@ 

